Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://royalbookmarking.com/story20693345/not-known-details-about-explorer-blockchain-ton-https-heavenarticle-com-author-pathpastor4-452336